Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires

Matthew M. Kropf, Bernhard R. Tittmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The magnetostrictive effect is used to generate ultrasonic waves for a variety of health monitoring applications. Given the ductile nature of many ferromagnetic materials and the common geometrical configuration of magnetic inductance coils, magnetostrictive generation of ultrasound is especially suitable for long cylindrical waveguides such as thin wires. Furthermore, utilizing ultrasonic guided wave modes in such waveguides provides a robust tool for remote inspection of materials or environments over long distances. Through the use of different guided wave modes, structural health monitoring sensors could be tailored to suit individual applications. Guided wave modes offer a choice in displacement profile allowing sensors to be designed to be either sensitive or impervious to surface effects. The dispersivity of the guided wave velocity can also be optimized for applications involving time-of-flight measurements. Despite the advantages afforded by guided wave analysis, current magnetostrictive transducers, consisting of coil of wire and a bias magnet, can not perform at the frequencies necessary to excite higher order guided wave modes. In order to advance the capability of magnetostrictive transducers for ultrasonic guided waves in wires, the design parameters of inductance coils are examined. Using a Laser Doppler Vibrometer, ultrasonic displacements are measured over a range of excitation frequencies for different coil configurations and parameters to determine the feasibility of developing a higher mode magnetostrictive transducer.

Original languageEnglish (US)
Title of host publicationHealth Monitoring of Structural and Biological Systems 2007
Volume6532
DOIs
StatePublished - Nov 5 2007
EventHealth Monitoring of Structural and Biological Systems 2007 - San Diego, CA, United States
Duration: Mar 19 2007Mar 22 2007

Other

OtherHealth Monitoring of Structural and Biological Systems 2007
CountryUnited States
CitySan Diego, CA
Period3/19/073/22/07

Fingerprint

Ultrasonic Wave
Guided Waves
Guided electromagnetic wave propagation
Ultrasonic waves
ultrasonic radiation
Transducer
Transducers
transducers
ultrasonics
Ultrasonics
wire
Wire
Coil
coils
Inductance
Health Monitoring
inductance
Waveguide
Ferromagnetic Materials
waveguides

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Kropf, M. M., & Tittmann, B. R. (2007). Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires. In Health Monitoring of Structural and Biological Systems 2007 (Vol. 6532). [65320L] https://doi.org/10.1117/12.715815
Kropf, Matthew M. ; Tittmann, Bernhard R. / Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires. Health Monitoring of Structural and Biological Systems 2007. Vol. 6532 2007.
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Kropf, MM & Tittmann, BR 2007, Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires. in Health Monitoring of Structural and Biological Systems 2007. vol. 6532, 65320L, Health Monitoring of Structural and Biological Systems 2007, San Diego, CA, United States, 3/19/07. https://doi.org/10.1117/12.715815

Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires. / Kropf, Matthew M.; Tittmann, Bernhard R.

Health Monitoring of Structural and Biological Systems 2007. Vol. 6532 2007. 65320L.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kropf MM, Tittmann BR. Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires. In Health Monitoring of Structural and Biological Systems 2007. Vol. 6532. 2007. 65320L https://doi.org/10.1117/12.715815